A   Bulb                                                       
A bulb is a object that makes light. Bulb was invented by Thomas Alva Edison. Today  the  bulb is used everywhere.In our house  we have got  30 bulbs.

ROBERT HOOKE

     HISTORY OF TELEPHONE                   

INNOCENZO MANZETTI

Telephone is telecommunication device for the reception and transmission of sound. The word telephone is made of two Greece words: TELE-far away; PHONE-voice. 

Year 1667 Robert Hooke invented string telephone- that conveyed sounds sounds over an extended wire by mechanicals vibrations.                                                         

1753, Charles Morrison propose that electricity can be used to transmit messages, by wires for each letter.

1844, Innocenzo Manzetti first mooted the idea of ''speaking telegraph’’ (telephone)

• This and and a lot of others inventors helps that we are using telephone today.
• I am really happy that I can use telephone, I can't imagine life without telephone anymore, because you can use it for your job, free time,  you can take pictures with it, play games.

TELEPHONE NOW

TELEPHONE THEN

                                    WATCH
First watch appeared in central Europe in 15th century, but people wore they in pocket by 17th century. Later people wore they on hand. In 1657 Robert Hooke and Christian Huygens
invention the balance wheel who help on watch who we wear on hand. 
Today almost only people have a watch and they are fashion accessory too. We need watch because we must know when time is it.
I don't use watch because I don't need it. 
     
                         

   digital watch                          clasic watch

                                                           TOOTHBRUSH


The toothbrush is an oral hygiene instrument to clean the teeth.
   

The first bristle toothbrush was found in China during the Tang dinasty in 619 to 907 bc and used hog bristle.The bristles were sourced from hogs living in Siberia and northern China because the colder temperatures provided firmer bristles.Handle of toothbrush was made of bamboo or bone.In Europe, WilliIam Addis of England is believed to have produced the first mass-produced toothbrush in 1780.
In 1770, he had been jailed for causing a riot; while in prison he decided that the method used to clean teeth – at the time rubbing a rag with soot  and salt on the teeth – was ineffective and could be improved.Natural animal bristles were also replaced by syntetic fibers, usually nylon, by DuPon 1938. The first nylon bristle toothbrush, made with nylon yarn, went on sale on February 24, 1938. The first eletric toothbrush, the Broxodent, was invented in Switzerland in 1954.

















a photo from 1899                                                                                  

now we have a toothbrushes in many diferent colors and sizes,


                                                                                                                    Tamara&Helena

Catapult

CATAPULT

Catapults were invented by antient Greeks. They usesd them to launch objects at distance. Catapults are proven to be one of the most effective mechanisms when it comes to wars. The Romans also used catapults but they improven them by using ballista catapults in wars. The most used catapults are ballista, springald, mangonel, onager, trebuchet and couillard. The last massive use of catapults was during the World War 1. Millatairy used aircraft catapults when they neded to launch planes and the takeoff runaway was to short. In January 2011 some magazine reported that a group of smugglers used homemade catapult t deliver some drugs into the United States from Mexico.

                                HISTORY OF COMPUTER

Abakus. 


  Slide rule.
                                                                                 


           











Summing machine.

Part Differential machine Charles Babbage.

A computer is a device that is capable of carrying out a sequence of operations.

Fundamentals of computing devices have emerged since antiquity.

It's a lot of other old ''computers''.
In nowdays people can't imagine how will life exist with no computers and other tecnology. We use computers for school, for jobs... Evan children use a computers to play games.

I use computer almost every day so I can't imagine  life without computer.
 I use it for:*school
                   *doing some projection
                   *free time
Evan old people use  computers.

HISTORY OF PIANO  -the most popular musical in the world

The story of the piano begins in Padua, Italy in 1709, in the shop of a harpsichord maker named Bartolomeo di Francesco Cristofori (1655-1731). Many other stringed and keyboard instruments preceded the piano and led to the development of the instrument as we know it today.
    


CLAVICHORT
Is an European keybord instrument invented in the early 14th cetntury.



                                                                                                                 

  These two are the most known ancestry of the piano!



HARPSICHORD
Is a musocal instrument played by means of a keyboard.
It produces sound by plucking a string when a key is pressed.               


                                                                                 
      





Ludwich van Beethoven, Frederic Chopin, Franz Liszt, Vladimir Horowich ,C. P. E, Bach, and many others were great pianists some of them even the greatest.